<template>
  <div>
    <p v-red>计数器{{ count | addFilter }}</p>
    <Header />
    <button @click="lookThis">点击查看this</button>
  </div>
</template>

<script>
export default {
  name: "App",
  data() {
    return {
      count: 1,
    };
  },
  methods: {
    lookThis() {
      console.log(this);
      console.log(this.a);
    },
  },
};
</script>

<style>
</style>